Answer:
6
Explanation:
Normally, oxygen has 8 electrons and 8 protons. If the charge is 2-, then that means there are two more protons than electrons. There would be 6 electrons.
Answer:
1.5 m
Explanation:
Step 1: Given data
Maximum speed recorded for a giant tortoise (s): 0.11 m/s
Time elapsed (t): 6.0 h
Step 2: Convert "s" to mi/h
We will use the following conversion factors:
- 1 mi = 1609.34 m
- 1 h = 3,600 s
Step 3: Calculate the distance traveled (d) by the giant tortoise
We will use the following expression.
s = d/t
d = s × t
d = 0.25 m/h × 6.0 h
d = 1.5 m
Answer:
Theanswer to your question is:
Limiting reactant = FeCl₃
Excess reactant = 1.66 g of Mg
Explanation:
Data
Mg = 41 g = 24.31 g/mol
FeCl₃ = 175 g = 162.2 g/mol
3Mg(s) + 2FeCl₃(s) → 3MgCl₂(s) + 2Fe(s)
3(24.31) of Mg ------------------ 2(162.2) of FeCl₃
72.93 g of Mg ------------------ 324.4 g of FeCl₃
Theoretical Proportion = 324.4/72.93 = 4.44
Practical proportion = 175 / 41 = 4.2
As the proportion disminishes the limiting reactant is FeCl₃.
Excess reactant
72.93 g of Mg ------------------ 324.4 g of FeCl₃
x ------------------------- 175 g of FeCl₃
x = (175 x 72.93) / 324.4
x = 39.34 g of Mg
Excess = 41 - 39.34
= 1.66 g of Mg
Red blood cells are the carriers of oxygen from the lungs to everywhere else
in the body. If there is a high count of red cells in the blood, then <span>high levels
of oxygen will be available to the muscles.</span>